As shown in the figure, it can be judged that 00e0-fc99-9999 is the specific host and MAC address learned by the switch through ARP. And the host has changed its IP address three times? () (Single-choice question)
10.137.217.210 00e0-fc01-0203 E1/0/0
10.2.2.1 00e0-fc99-9999 Eth-Trunk 1
192.168.20.1 00e0-fc99-9999 vlan100
10.0.0.1 00e0-fc99-9999 vlan200

The output information of the link aggregation port of a certain switch is as follows. If you want to delete Eth-Trunk 1, which of the following commands is correct?

Telnet is a module that implements the Telnet protocol that comes with Python ()

Which field of the ipv6 packet header can be used for QoS?

UDP cannot guarantee the reliability of data transmission, and does not provide functions such as message sequencing and flow control. It is suitable for flows with low transmission reliability requirements but high transmission speed and delay requirements.